2021 BMW X6 3.0 40d MHT M Sport

Overview

• Make: BMW
• Model: X6
• Trim: M Sport
• Version: 3.0 40d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (335 bhp)
• Year: 2021
• Mileage: 57,812 miles
• Fuel: Diesel, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 BMW X6 M Sport is advertised with 57,812 miles, approximately 10,400 above the typical mileage for its age. Priced at £40,911, it is advertised £1,518 above the AskCar estimate of £39,393. To work out the AskCar estimate, we analyse UK dealer adverts for 547 BMW X6 cars across different ages and specifications. It first appeared in our advert records 15 days ago. The government's MOT record matches its advertised mileage. You can find this car at Essex Car Store in Braintree. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,518 (3%) over the AskCar estimate of £39,393.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 547 priced BMW X6 adverts across different ages and specifications, as of 5 November 2026.

A 2021 BMW X6 with the 3.0 diesel engine is typically advertised at £37,900: the median of the 40 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 BMW X6 has been on sale for at least 15 days.

Price history

AskCar first saw this advert on 21 October 2026 at £40,911. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 24 July 2027.

It has had 3 MOTs. The latest, on 21 July 2026, passed.

Advisories at the latest test: rear brake pad(s) wearing thin.

Mileage at that test: 55,590 miles, which matches the advertised 57,812 miles.

Advertised mileage is about 10,400 miles higher than the median mileage of a 2021 BMW X6 on AskCar.

Similar cars

31 other 2021 BMW X6 M Sport 3.0 diesel automatic SUVs are for sale at UK dealers, from £29,999 to £43,500, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 60,000 miles. Price: £39,995, £916 less than this car. Dealer: AH Specialist Cars in Watford. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-d605dfa56e8f
• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 51,915 miles. Price: £40,599, £312 less than this car. Dealer: Stratstone Bmw Leeds in Leeds. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-c3b913303d95
• 2021 BMW X6 M Sport, 3.0 diesel SUV, black. Mileage: 63,733 miles. Price: £36,500, £4,411 less than this car. Dealer: ESP Cars in Long Eaton. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-f4103bf7884a

• The nearest: 2021 BMW X6 M Sport, 3.0 diesel SUV, black, 21 miles from this car. Mileage: 75,000 miles. Price: £31,500, £9,411 less than this car. Dealer: Auto 2000 in Havering. AskCar page: https://askcar.co.uk/car/bmw-x6-2021-af77b1097200